Pulverizing-machine



(No Model.) 4 2 Sheets-Sheet 1.

J. W. HILTON.

PULVBRIZING MACHINE.

l nl" ATTORNEYS.

Patented Dec. 4, 1888..

lll ini NA PETERS. PholLlhogx-apber. Wnhingion. l). Q

W nv

l WITNESSES:

2 Sheets-Sheet 2.

(No Model.)

Y 'J. VW. H-ILTON. -PU`LVERIZ1NG MACHINE. No. 393.905.A I Patented Deo. 4, 1888.

WITNESSBS; I INVBNTOR: l

- BY .jmv

JW y

ATTORNEYS.

UNITED STATES PATENT OFFICE.

.I AMEs w. HILTON, OF BROOKLYN, Naw YORK.

PuLvERlzlrNe-MAcHlNE.

SPECIFICATION forming part of Letters Patent No. 393,905, dated Deeepnnr 4, 1888. Application tiled September 19, 1887. Serial No. 250,1718. (No model.)

To all whom it may concern:

Be it known that I, JAMES W. HILTON, of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Pulverizing-Machine, of which the following isv a full, clear, and exact description.

This invention relates to a Inachine particularly lintended for the pulverizing of ore, although, as will be apparent from the description hereinafter given, it is applicable to other uses; and it consists in the'construction and combinations of parts, as will be hereinafter fully described, and speciiically pointed out in the claims.

Reference is to behad to the accompanying drawings, formingapart of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

. Figure l is a plan view of the pulverizingmachine with parts of the exterior being broken away the better to illustrate internal partsf Fig. 2 isa central vertical longitudinal section through the machine on line Fig. l. Fig. 3 is a cross-section of same on line y y, Fig. 2. FigsAc and 5 are sectional views in detail showing modifications in the arrangement and formation of some of the parts. Fig. 6 is a cross-sectional view, on a larger scale, on the line .e z in Fig. 2, and showing a modification in the method of attaching the buckets; and Fig. 7 is a view in detail of one of the ore buckets or elevators detached.

In constructing the machine under the present invention I employ a Inain drum or cylindrical casing, A, closed by end heads, A2, each provided with axial tubular bearings B, mounted in suitable supports, C, therefor,- to which may be applied gears or pulleys D, by which to rotate same, and in communication with each axial passage a in the tubular bearings is a stationary hopper, E, and within said passages a a are screws F F, adapted for independent rotation for the introduction of the ore, 85o., into the interior of the drum.

The drum A in and across its width in peripheral lines toward each edge is provided with 'a series of openings, G G, covered by screens H H, and between such screened openings a solid or unbroken peripheral portion, Knot the drum is left,which is covered by two rings, L L, of steel, &c., having between them and resting on the inner periphery of the .drum a ring, Ivrwhieh is of sufneientwidrhto teriorly of the drum coincident with'the screened openings are a series of buckets or elevators, .Lfor conveying and reconveylng vthe unpulverized or insuiiiciently pulverized ore to the plane of pulverization, and are here shown as four in number, each of a length equal to a portion only of the length of the screened openings GG.

Each bucketJ is aboxlike structure curved longitudinally to fit the inner periphery of the drum, and consists of an inner wall, h, the outer wall being formed, when the bucket is in place, by a portion, g', of the gauze or screen H, inner and outer side walls, k k2, rear closed wall, Z, and front or forward wall, m,which latter is of a less depth than the bucket and stands detached from the ends of the side walls, lc k2,-that is, it extends in an angular extension beyond the end of the inner wall, lo,

a side opening, q, therein, particular reference being had to Figs. 6 and 7.

Each bucket may be made separately, as particularly seen in Fig. 7, and provided with a lug or extension, q2, of or on its rear wall, l, through and by which it may be bolted or otherwise secured to the drum A,and, as shown in Fig. 6, the several buckets may be attached to or formed upon a rigid hoop or ring, Q, whereby the buckets may be more iirmly held and secured in place and against detachment.

The ore to be pulverized is introduced through each head of the revolving drum by the screws F and deposited upon the screened portions G, and as the drum is rotated and the IOO forward opening, j), at the nose of the bucket permits the ore by its gravity falls into the bucket toward its closed rear end, l, and in the continuation of the revolution ot' the drum the bucket is carried into such an inverted position that its before forward opened end, p, is rearmost and lowermost, when from gravity the ore, &c., will pass olf laterally or inwardly at the opening q, being guided bythe angular direction ot' the forward end wall, in, serving as a chute therefor, and it then falls across a lateral plane to and upon the pulverizing surfaces or rings L L in advance of the position of the pulveriZing-rollers N N, and on a continuation of the revolution of the drum the ore, the., settles and always remains in the lowest position on said rings L, andis carried under the crushing and pulverizing rollers N,

there always being, as is obvious, a rolling i contact between said rollers and the peripheral pulverizi11g-surfaces of the drum.

The ore, which has been crushed in a great er or less degree by the action of the pulverizing-rollers, will as it accumulates fall or be I crowded upon the screened peripheries G G,

such thereof as is tine enough passing through the screens, the remainder thereof being again taken up by the buckets, as before, and again `discharged upon the pulveriZing-surfaee for the repeated pulverizing action.

In practice the ore may be subjected to the pulverizing action when in a dry condition or introduced with water through the axial bearings B, or otherwise, and the drum may be wholly or partially immersed in a liquid-tank, R, all as is deemed desirable and expedient.

The apertures f in the rib d permit the entrance of ore from one pulverizing-surface through to another, securing an even disposition upon either ring should a' greater qualitity be deposited or remain upon one than upon the other, and thus the work performed on the pulverizing-surfaces is equalized, and, if desired, the ring M may be removed, the rollers and the rings L forced together or replaced by other rings, and the rollers N N may be moved together upon their pintle to form in substance one roller of wide tread, and, again, instead oi' rollers formed with fiat faces, as seen in Figs. 2, 25, and '-l, they may be formed with bearing-surfaces of convex or other shape-as, for instance, formed by the employment ot' a roller-balhXg-the pulverizing surface or periphery being preferably concave, as seen in detail in Fig. 5, and on each side of the roller of wide tread or of the rollerball rings similar to the ring )I or other means may be employed to contine and guide the roller upon the pulverizing-surface.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

I. The combination, with the drum A, having` a series ot' openings, G, screens II, covering or closing said openings, the drumhaving a solid or unbroken peripheral portion, K, a ring, L, within the drum on the part K, and the roller N, of the series of curved buckets J, open next to the screens, each secured to the inner side of the drum, and provided with the oblique forward walkin, ot' less depth than the bucket, to form the inlet-opening p between its edge and the screen, and also to direct the discharged material laterally to the roller through a discharge-opening, q, formed between the inner free end of the said wall n1 andthe end ol' the inner side wall,f,ot' the bucket, substantially as set forth.

2. The combination, with the drum, its screens, and the unlgn'oken peripheral portion K between the screen s, oi' the two spaced rings L L, movable toward eachother within the l drinn ou its part K, the removable ring M,sepa

rating the two rings and having a series of openings, j', through which the. material operated upon may pass from one ringto the other, the loose rollers X )",i'estingon the rings, and a pintle on which said rollers are mounted movably, substantially as set forth.

il. A pulverizingmachine comprising a drum, A, having peripheral openings G, an intermediate unbroken portion, K, and heads closing the cylinder, screens H, covering each opening G, curved buckets secured within the drum and closed on their open outer sides by said screens, each bucket having an oblique front wall or end ot less height than the bucket to form the front niiet-openings, lp, next to the screens, said oblique walls also forming guides to direct or discharge the material upon the intermediate unbroken portion, K, substantially as set forth.

l. In an ore-pulverizer, the bucket J, curved longitudinally and formed with closed sides 7c, 7g2 an end wall, in, of less depth than the bucket, exteiuling along the inner wall from the wall k2 forward and meeting the plane oi' the side wall, c,in advance ot' the end, whereby the openings Yp q are formed, substantially as set forth.

In an ore-pulverizcr, the circular series of buckets J, open on their outer sides, and having oblique t'ront end walls, nl, ol' less depth than the buckets, whereby openings p q are formed, and the ring O, connecting the several buckets and having openings between the buckets, substantially as set forth.

JAMES W. HILTON.

Witnesses:

Hman K. SCOTT, Jr., Hman K. SCOTT.

IOO

IIO 

